Jennifer Hudson Reveals Her "Number" to Oprah

J-Hudson opens up to Oprah about her new body and her family

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Oscar-winning actress and singer Jennifer Hudson announced that she is the new spokesperson for Weight Watchers. She had her first baby in August and found weight-loss success with the program. The difference is evident between Sept. 2009 (left) and March 2010 (left). "It's a lifestyle change, not a diet," Hudson said.